BlueDisplay
Android app by Armin. Libraries & Demo · Armin
- Store rating
- Unknown
- Store rating count
- Unknown
- Download price
- Free to download
- In-app purchases
- Not listed in captured metadata
- Version
- 5.0.0
- Listing last refreshed
- 2026-09-16
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Store description excerpt
Open source software to turn your smartphone or tablet into an Android remote touch display and voice output for your Arduino and ARM projects. You can do this using a Bluetooth adapter like HC-05 or an USB OTG cable. Use the Arduino sketch to create a GUI with graphics, buttons, and sliders on your smartphone or tablet. Simply connect an HC-05 to the RX/TX pins of your Arduino. Alternatively, you can connect the Arduino directly to your smartphone using a USB cable and a USB-OTG adapter. BlueDisplay receives drawing requests from the Arduino via Bluetooth and renders them. It can also handle voice output requests, which are processed by Android's Text-to-Speech Engine. GUI callback, touch and sensor events are sent back to Arduino. No Android programming is required! In full-screen mode, the options menu is accessed by swiping from the left edge. Features: - Open Source. - C++ Libraries for Arduino and ARM (STM) - Touch button + slider objects with tone feedback. - Button and slider callback as well as touch and sensor events are sent back to Arduino. - Graphic + text output as well as basic printf implementation. - Voice output with Android TextToSpeech for Android > 5.0 (Lollipop). - Draw chart from byte or short values. Enables clearing of last drawn chart. - Play system tones. - Easy mapping of UTF-8 characters like Ohm, Celsius etc.. - Automatic and manually scaling of display region with handling of insets. - Up to 115200 Baud using HC-05 modules. - USB OTG connecion can be used instead of Bluetooth. - Local display of received and sent commands and data for debug purposes. - Debug messages as toasts. - Strings printed with Serial.print() are interpreted as debug messages. - Hex and ASCII output of received Bluetooth data at log level verbose. Sources + Examples: Sources are available at https://github.com/ArminJo/android-blue-display. Examples are contained in the Arduino BlueDisplay library https://github.com/ArminJo/Arduino-BlueDisplay. Or use (Ctrl+Shift+I) in the Arduino IDE and search for BlueDisplay. The library includes examples for easy initializing a HC-05 and for a simple DSO with 0.3 megasamples/sec. Before using the examples, take care that the BT-module (e.g. the the HC-05 module) is connected to your Android device and is visible in the Bluetooth Settings. All examples initially use the baudrate of 9600. Especially the SimpleTouchScreenDSO example will run smoother with a baudrate of 115200. For this, change the example baudrate by deactivating the line `#define HC_05_BAUD_RATE BAUD_9600` and activating `#define HC_05_BAUD_RATE BAUD_115200`. AND change the BT-Module baudrate e.g. by using the BTModuleProgrammer.ino example. ARM example code can be found on https://github.com/ArminJo/STMF3-Discovery-Demos. Version Info https://github.com/ArminJo/android-blue-display#revision-history: 5.0 - Voice output with Android TextToSpeech for Android > 5.0 (Lollipop). - Text Y and X position is upper left corner of character.
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